
Lawyers within the practice at Loyens & Loeff are commended for being ‘technically excellent’, and frequently work on complex multi-jurisdictional litigation and international arbitration matters. The Brussels office coordinates closely with the Dutch, Luxembourg, and Swiss offices of the firm, adding to their cross-border capabilities. A wide range of notable clients seek the expertise of the team for representation, including Pfizer, Amazon, AstraZeneca, and Meta. Hakim Boularbah is an ‘outstanding professional with impressively effective legal skills’, and leads the team alongside Olivier van der Haegen. Maria-Clara Van den Bossche is a ’standout lawyer‘ as well as a ’great problem-solver and strategist‘.
Testimonials
Collated independently by Legal 500 research team.
‘Out of the box, innovative and effective legal strategy approach to conduct successfully complex multi-country proceeding. Ability to conduct very complex cases from a content but also process perspective (alignment of different shareholders).'
'Outstanding availability and reactivity. Outstanding communication and client engagement skills.'
‘Hakim Boularbah is an outstanding professional with impressively effective legal skills with business impacts combining innovative, out-of-the-box legal thinking together with effective business sense and consequent and reliable implementation.'
'Hakim Boularbah delivers consequently outstanding results. He also demonstrated impressive communication and engagement skills among a wide array of complex shareholders / stakeholders across different countries and approaches. His client commitment is second-to-none and makes him and his team immensely valuable as business partners in the most difficult and complex cases.’
‘The team in Loyens & Loeff are extremely reputable - for good reason. Their lawyers are technically excellent.’
‘Maria-Clara Van Den Bossche is a standout lawyer. Having worked with her for many years, she is unfaltering with excellent legal advice, attention to detail and strategic thinking.’
‘I find Loyens' Belgian office to be highly responsive and collaborative, with a particular strength in dealing with cutting-edge litigation issues in the tech and digital sectors.’
‘I primarily work with Maria-Clara Van Den Bossche. She is a great problem-solver and strategist, highly responsive and a pleasure to deal with.’
Key clients
- OrbiMed
- Ligue des Droits Humains
- Pfizer
- BNP Parisbas
- National Bank of Kazakhstan
- Nyrstar
- Amazon
- AstraZeneca
- BNP Paribas
- Porsche AG
- Eurelec
- Meta Platforms
- Klépierre
- Chevron Corporation Inc. and Chevron USA Inc.
- Yara Belgium
- John Cockerill - Cockerill Maintenance & Ingéniérie
- Atenor
- Amundi
- Siemens Belgium SA
- Yukos Oil
- Credendo
- Sonaca
Lawyers

Practice head
The lawyer(s) leading their teams.
Hakim Boularbah, Olivier van der Haegen